Nozzle mechanism



Aug; 1931. A. v: MOTSINGER 1,818,422

NOZZLE MECHANISM Filed Jan. 17, 1929 I N V EN TOR. Armand IZMotsZnykr M r ATTORNEY.

Patented Aug. 11, 1931 UNITED STATES PATENT OFFICE AIRMAN D V. MOTSINGER, F EDGEWOOD ARSENAL, EDGEWOOD, MARYLAND NOZZLE MECHANISM Application filed January 17, 1929. Serial No. 333,193.

(GRANTED UNDER THE ACTOF MARCH 3, 1883, AS AMENDED APRIL 30, 1928; 370 0. G. 757) This invention described herein may be manufactured and used by or for the Govern ment'for Government purposes, without the payment to me of any royalty thereon.

- This invention relates in general to nozzles and more particularly has reference to a valve mechanism for regulating the flow of reactive substances. I 1

Previous to this time, dilficulty has been 12) experienced in preventing corrosion of valves of this character composed of metal chemically affected by the material dispensed. A number of substances also have the property of forming viscous compounds which tend to clog the valve and thus retard the normal operation of the mechanism.

These disadvantages have been present to a marked degree in valves used for releasing the substances commonly employed for gen 2o crating smoke screens from aircraft'or, on the ground, from tanks or lines. Among the materials most generally employed are titanium tetrachloride and stannic chloride, Which'react with water or water Vapor to form hydrochloricacid. 1i 7 a The hydrochloric acid is highly corrosive, and in a short period'of time may destroy the metal on the valve to such an extent as to render it unfit for further use. Even though acid resisting material is used in the valve, the titanium tetrachloride formsviscous hydrates whichhave the tendency to clog the valve and prevent free operation of the parts, thus in many instances making its continued use unsafe. n

It will also be appreciated that valves of this type must act positively to'regulate the flow of reactive-substances to the extent required according'to the desires of the operator. Also, the construction should be such that any pressure on the system cannot effect inadvertent operation, as the results of an accidental discharge might often be dangerous.

An object of this invention is to provide 45 a nozzle for dispensing reactive substances having. a valve mechanism simple in design and positive in operation.

Another object of thisinvention is to provide a nozzle for dispensing reactive sub stances having a valve mechanism operating out of the path of flow of the reactive substances.

Still another object of this invention is to provide a nozzle for dispensing reactive substances having a valve mechanism which may be opened to any desired extent so that in the full position it will afford no obstruction to the free discharge of the reactive substances.

A further object of this invention is to provide a nozzle for dispensing reactive substances having a valve mechanism, which may be opened against pressure and automatically closed, that cannot be opened by any'pressure in the system. With these and other objects in view which may be incident to my improvements, the invention consists in the parts and combinations to be hereinafter set forth and claimed, with the under-standing that the several necessary elements comprising my invention may be varied in construction, proportions and arrangement, without departing from the spirit and scope of the appended claims.

In order to make my invention more clearly understood, I have shown in the accompanying drawings means for carrying the same into practical effect, without limiting the improvements in their useful applications to the particularconstructions which for the purpose of explanation have been made the subject ofillustration.

Inthe drawings forming a part of this specification Figure 1 isa side elevational view of the nozzle showing the improved valve mechanism forming the subject matter of this invention. a

Figure 2 is a sectional view taken on line 22 of Figure 1, showing the duplicate sides of the valve assembly.

Figure 3 is a side elevational view, showing the mechanism shown in Figure 1 con nected to a container mounted under the fuselage of an airplane.

Referring by numerals to the drawings, in which the same and similar elements are designated by like symbols of reference throughout, and more particularlyto Figure 1, there is shown a nozzle 1 forming the end an integral crosspiece 5 at the end, is fitted over the opening of the nozzle 1 on a plane with the center of the nozzle. The saddle 2 is formed with upwardly projecting 6Xl1611- sions 6 integrally formed with a crosspiece 7 adapted to fit over the" nozzle and hold the structure in position. 1

The crosspiece'7 is provided with an aperture for receiving a set screw Sheld by a lock washer 9 and similar screws 11 on the sides of the saddle 2adjacent the extensions 6, for adjusting the-position of the saddle structure' on the end of the nozzle.

cap 12 forming a closure is mounted against the opening at the end of the nozzle 1. A stud bolt13 is welded to the center of the outside of the cap 12 and secured in an aperture through the crosspiece 5 by a nut 14:. 1 i r i i; A' series of leaf springs 15, of'progressively greater length, is mounted on the body ofthe nozzle and held by a holder 16 formed integral therewith or otherwise suitablyattached. 'Thefends ofthe spring 15 are cupped, as at 16, adapted to receive a crosspiece 17 forming a part of a bracket 18. The ends ofth'e bracket 18 are turned in and pivoted in the termination of the sides. 8 and 4 of the saddle 2. It will be appreciated'that the cap? 12 mounted on the crosspiece 5 is held in position by the crosspiece 7 forming a part of the saddle and resting on the top of the nozzle-and'the' spring 15 resting against-the crosspiece 17 on the bracket, 18; The endsof a bracket: 19 are'pivoted near the ends of the saddle 2. by aplurality of pins 21"seated in the walls of the nozzle 1. The bracket 19 includes an integral cross piece 22 having a projection 23 formed or otherwise suitably attached in the center thereof, and provided with, 'an aperture "2 1 for engagement with a pull cordor'lever.

The ends ofthe-bracket 19'are forme'd at an angle to the main body, as shown at 25, sothat in thernormal position the'bracket will be disposed at an angle to the'saddle, while the en'dswill' lie in parallelrelation. The main portions. of the bracket and the angular ends each form in eifect integral pairs of" levers. 'The angular ends of' the bracket are pivoted to the ends of the saddle bye-plurality of pins 26 in line with, but removed from, the pins 21 so that when the bracket 19 is pulled upward, it will pivot on the pins 21 seated in the body of the nozzle ands-push the saddle downward against the force of-the spring 15 engaging the bracket 18,-pivoting on the pins 26.

A plurality of integral, upwardly projecting lugs are formed on the top sides of the saddle near the ends above the pins 21 adapted to be engaged by a plurality of pins 28 welded on the outside of the arms of the bracket 19. bar 29 'is welded or otherwise mounted transversely against the top of the nozzle to act as a stop for the arms formingthe bracket and limit the movement of the saddle.

A gasket 31 is secured against the inside surface of the cap 12, and the mouth of the nozzle preferably turned to provide a narrow edge and thus afford only a small bearing surface against the gasket to increase the pressure ofithe closure. 7 The gasket may be composed of any suitable soft material which will not be affected bythe particular chemicals flowing through thenozzle, such materials aslead, asbestos or'rubberbeing generally suitable, as they are able to withstand the action of the substances, most commonly used. ,1 f 1 It is intended that thevalve mecha'nismbe mounted on a nozzle, such as that. shown-in Figure 3, consisting of an elbow 3290011- nected by a'coupling33 to a pipe 34. The pipe 34 is welded or otherwise suitably secured in a container 35 mounted underithe fuselage of an airplane in any suitable man ner. One end of a:pull cord 36 is attached to the lever operating the valve, and the other end is fixed in the cockpitso that a pilot or observer may operate the valve at will, it being manifest, as hereinbefore described,'that all or only a .p0rtion ofthe-contents of the tank maybe released.

The operation ofithis invention may be readily,understoo d by having reference ,to Figure 1. The sectionof pipe 1' forming the nozzle maybe, as indicatedhereinbefore, the termination of-a pipe connected to a receptaclecontaining the substances which it is de: sired to dispense, and'suitably mounted on a vehicle oraland emplacement. The pull cord 36 is attached through the aperture 24 in the projection=23 formed on the bracket 19 acting as anoperating lever and connected to any-suitable operating point, such as the cock-: pit of'an airplane or a desirable interior lo-v cationonata'nkl 1 vM In the instance of land emplacements, or'in other installations where it is desired to employ a number of the valves, it is apparent that the cords or levers employed may be arranged so that the entire number may be operated simultaneously or provision aflord ed for Operating them singly.

When the bracket 19 is raised by force exerted by the pull cord 36, the arms will move in a counter clockwise direction, the pins/21 acting as pivots. The'pins 26 hinged on the end of .the saddle will concomitantly; be forced Joif center, thus moving the saddle structure and'cap-12 forward and away from lug 27 on the saddle and thus move the valve cap backward and over the mouth of the nozzle, allowing a free path of fiow for the fluid emitted from the line in the removed position, preventing contact of any of the substances with the valve structure.

When the tension on the bracket 19 is re leased by removing the force from thepull cord, the spring 15, pressing against the crosspiece on the bracket 18, will automatically return the saddle to its normal position, .determined by the set screw 8 acting as a stop on the top of the nozzle, thus locking the closure in position over the mouth of the pipe.

It will be apparent that a number of containers having valves of the character described on the outlet lines may be attached to an airplane, depending upon the size of the craft, or one large receptacle used if the same is found more suitable, and in like man ner similar installations may be made on tanks.

It is to be noted that in this design of valves the discharge line may be made of any soft corrosion resisting material, while the working parts can be composed of stronger metal, like steel or duralumin, and thus insure against breaking of the valve.

There is accomplished by this invention a nozzle for dispensing reactive substances from aircraft, tanks and the like having an improved valve mechanism simple in construction and positive in operation, operating out of the path of flow of the substances dis pensed, which affords no obstruction to the free discharge of such substances and which may be opened against pressure and automatically closed and prevented from opening by any pressure in the'system.

While I have shown and described the preferred embodiment of my invention, I wish it to be understood that I do not confine myself to the precise details of construction herein set forth, by way of illustration, as it is apparent that many changes and variations may e made therein, by those skilled in the art, without departing from the spirit of the invention, or exceeding the scope of the appended claims.

I claim:

1. A nozzle comprising a valve having a closure, a saddle slidably mounted on the nozzle for carrying the closure, a plurality of levers fulcrumed on the nozzle, each of said levers pivotally connected to the saddle, lugs formed upon said saddle, pins seated in the levers adapted to engage the lugs on.

the saddle so as to swing the saddle about the pivots connecting it to the levers, a cross piece mounted on the top of the nozzle to limit the movement of said levers, and means connected to said saddle and to the nozzle for normally maintaining the closure over the discharge end of the nozzle.

2. A nozzle for reactive substances, comprising a valve having a closure, a saddle resting on the nozzle for carrying the closure, a bracket pivoted on the ends of the saddle spanning the bottom of the nozzle, a leaf spring engaging the bracket mounted on the bottom of the nozzle, and a plurality of levers pivoted on the side of the nozzle back of the closure, and other levers formed on the levers and pivoted on the saddle to operate the valve against spring tension through movement of the saddle, and to lock the closure.

3. A nozzle for reactive substances, comprising a valve having a closure, a saddle resting on the nozzle for carrying the closure, a plurality of levers fulcrumed on the sides of the nozzle back of the closure, and other levers formed on the levers and pivoted on the saddle, and means pivoted on the levers adapted to cooperate with means formed on the saddle to operate the valve 7 4. A nozzle for reactive substances, comprising a valve having a closure, a saddle resting on the nozzle for carrying the closure, lugs formed on the saddle, a plurality of levers fulcrumed on the sides of the nozzle back of the closure, and other levers formed on the levers and pivoted on the saddle and means provided on the levers'to engage the lugs on the saddle so as to swing the saddle about the pivots connecting it to said levers.

5. A nozzle for reactive substances co1nprising a valve having a closure, a saddle resting on the nozzle for carrying the closure, lugs formed on the saddle, a plurality of levers fulcrumed on the sides of the nozzle back of the closure, and other levers formed on the levers and pivoted on the saddle, pins seated in the levers to engage the lugs on the saddle so as to swing the saddle about the pivots connecting it to said levers, and means to limit the movement of the levers.

6. A nozzle for reactive substances comprising a valve having a closure, a saddle resting on the nozzle for carrying the closure, lugs formed on the top ends of the saddle, a bracket forming a plurality of levers fulcrumed on the sides of the nozzle back of 

